[e10s][a11y] page load is extremely slow and gets unresponsive since 22-Aug-2016 Nightly51.0a1

RESOLVED WORKSFORME

Status

()

RESOLVED WORKSFORME
2 years ago
2 years ago

People

(Reporter: alice0775, Unassigned)

Tracking

(5 keywords)

51 Branch
x86
Windows 10
hang, multiprocess, perf, regression, reproducible
Points:
---
Dependency tree / graph

Firefox Tracking Flags

(firefox52 fixed)

Details

(Whiteboard: aes+)

Attachments

(1 attachment)

(Reporter)

Description

2 years ago
[Tracking Requested - why for this release]: Performance regression on Youtube(at least)

Build Identifier:
https://hg.mozilla.org/mozilla-central/rev/24763f58772d45279a935790f732d80851924b46
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0 ID:20160823030224

Reproducible: always

Steps To Reproduce:
1. Open https://www.youtube.com/channel/UCxVlUVEiwY43qLhCB7kMBIw
2. Try to scroll to bottom with mouse wheel while page is loading
   ---- Observe: Slow, Laggy and sometimes unresponsive
3. Mouse hover "Popular Upload" and Click [Play All]
4-A-1. Switch to the other applications, so that Nightly is inactive
   ---- Observe: sound distortion
4-A-2. Click The Nightly taskbar button or right click the button
   ---- Observe: unresponsive for a while
4-B. Try to scroll with mouse wheel while page is loading
   ---- Observe: Slow, Laggy and sometimes unresponsive
(Reporter)

Updated

2 years ago
tracking-e10s: --- → ?
(Reporter)

Comment 2

2 years ago
Setting the following preferences seems to fix the problem.

user_pref("accessibility.force_disabled", 1);
Are you force-enabling e10s?
Are you running with a touch screen?
Flags: needinfo?(aklotz) → needinfo?(alice0775)
(Reporter)

Comment 4

2 years ago
(In reply to Aaron Klotz [:aklotz] from comment #3)
> Are you force-enabling e10s?

YES

> Are you running with a touch screen?

NO


Windows10RS1 Home x64 seems to disable e10s by some reason.
Flags: needinfo?(alice0775)

Updated

2 years ago
tracking-e10s: ? → +
Whiteboard: aes+
Tracking 51+ since this is reproducible and a top site.
tracking-firefox51: ? → +

Updated

2 years ago
Component: Untriaged → Audio/Video
I have not been able to reproduce this on my Surface Book. Jim, have you noticed anything when a11y+e10s is force enabled?
Flags: needinfo?(jmathies)
(Reporter)

Comment 7

2 years ago
The problem(page load is slowu / nresponsive) is not only on youtube but also wikipedia....

https://en.wikipedia.org/wiki/Firefox page load is slow, and become unresponsive while scroll up and down.

So, not Audio/Video specific.
Component: Audio/Video → Disability Access APIs
Alice0775 White, do you use an IME? I wonder if that needs to be factored into this somehow...
Flags: needinfo?(alice0775)
(Reporter)

Comment 9

2 years ago
(In reply to Aaron Klotz [:aklotz] from comment #8)
> Alice0775 White, do you use an IME? I wonder if that needs to be factored
> into this somehow...

Yes, I use Japanese IME
* Microsoft IME
* ATOK2016  <---- default


And also I changed Windows10 text size from Contorol panel.
1. Open Control Panel > Appearance and Personalisation > Display
   (or Start > Settings > System > Display > Advances display settings > Advanced sizing of text and other items)
2. "Change the text size only"
    "Title Bar", "Menu", "Message boxes" etc.  and select all "11"
Flags: needinfo?(alice0775)

Comment 10

2 years ago
Alice, any chance this was bug 1295214?
Flags: needinfo?(jmathies) → needinfo?(alice0775)
(Reporter)

Comment 11

2 years ago
(In reply to Jim Mathies [:jimm] from comment #10)
> Alice, any chance this was bug 1295214?

I can still reproduce the problem on the latest Nightly51.0a1.

https://hg.mozilla.org/mozilla-central/rev/1a5b53a831e5a6c20de1b081c774feb3ff76756c
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0 ID:20160829030202
Flags: needinfo?(alice0775)
Hi :jimm,
The issue still can be seen in nightly, can you help shed some light here?
Flags: needinfo?(jmathies)

Comment 13

2 years ago
We'll look at this via our a11y+e10s work.
Flags: needinfo?(jmathies)
(Reporter)

Updated

2 years ago
Summary: Youtube page load is extremely slow and gets unresponsive since 22-Aug-2016 Nightly51.0a1 → page load is extremely slow and gets unresponsive since 22-Aug-2016 Nightly51.0a1
(Reporter)

Updated

2 years ago
status-firefox52: --- → affected

Updated

2 years ago
Flags: needinfo?(aklotz)
Alice, ATOK2016 is a third-party IME, correct? Do you know if there is a trial version or something that I would be able to run to attempt to reproduce your problem?
Flags: needinfo?(aklotz) → needinfo?(alice0775)
(Reporter)

Comment 15

2 years ago
Created attachment 8794993 [details]
Screenshot : Procedure to download Atok2016Tryal_30Days

There seems no English page. Sorry

Download ATOK2016Trial 30days:
0. http://www.atok.com/try/?w=dl_t
1. After open the page, Please follow attached screenshot
Flags: needinfo?(alice0775)
Thanks, I am now downloading it :-)

Comment 17

2 years ago
Hey Alice, are you able to reproduce this on current aurora (51) with e10s on?
Flags: needinfo?(alice0775)
(Reporter)

Comment 18

2 years ago
Yes, I can still reproduce.
On new profile, e10s is disabled(Disabled by accessibility tools) for some reason. Of course, the page load is normal.

However, 
A. When forced to enable e10s, the page load is extremely slow and browser becomes unresponsive for a while(10sec+). <--- this bug
B. When forced to enable e10s and disable accessibility, the page load is normal.

Tested with STR comment#7 on Aurora51.0a2[1] and Nightly52.0a1[2].

[1]
https://hg.mozilla.org/releases/mozilla-aurora/rev/af5a59737002cc4e8bb0f69acddb2583a9d952c6
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0 ID:20161005004013

[2]
https://hg.mozilla.org/mozilla-central/rev/ea104eeb14cc54da9a06c3766da63f73117723a0
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0 ID:20161005030211
Flags: needinfo?(alice0775)
(Reporter)

Updated

2 years ago
Summary: page load is extremely slow and gets unresponsive since 22-Aug-2016 Nightly51.0a1 → [e10s][a11y] page load is extremely slow and gets unresponsive since 22-Aug-2016 Nightly51.0a1
(Reporter)

Comment 19

2 years ago
[Tracking Requested - why for this release]:
tracking-firefox52: --- → ?
Keywords: multiprocess
(Reporter)

Comment 20

2 years ago
I can also reproduce the hang on today's Nightly52.0a1[1].
And It is worse than yesterday's build. Taskbar also hang up for a long period.

[1]
https://hg.mozilla.org/mozilla-central/rev/777fb63db8de8d78b64b8141d1a998397275dd03
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0 ID:20161006030208
status-firefox52: affected → fixed
tracking-firefox52: ? → ---
(Reporter)

Comment 21

2 years ago
[Tracking Requested - why for this release]:
status-firefox52: fixed → affected
tracking-firefox52: --- → ?
(Reporter)

Updated

2 years ago
Keywords: hang
We're hoping this will go away with a fix (on another bug) landed in central this morning.
(Reporter)

Comment 23

2 years ago
(In reply to David Bolter [:davidb] from comment #22)
> We're hoping this will go away with a fix (on another bug) landed in central
> this morning.

Yep, Seems fixed on Nightly52.0a1.

Hope uplift the bunch of patch to 51.0a2.
Status: NEW → RESOLVED
Last Resolved: 2 years ago
status-firefox51: affected → ---
status-firefox52: affected → fixed
tracking-e10s: + → ---
tracking-firefox51: + → ---
tracking-firefox52: ? → ---
Depends on: 1304449
Resolution: --- → WORKSFORME
That's great news! I do plan to attempt uplift. It will be up to release management to approve that, of course...
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